Couple of things...
You can't use 'me' in a controlsource expression. It has to be the full form reference.
Some of your quotes were awry.
=DAvg("[Time Spent]","Table1","[Item Code]='" & [Forms]![form2]![Item

This article is a continuation or rather an extension from Cascading Combos (http://www.experts-exchange.com/A_5949.html) and builds on examples developed in detail there. It should be understandable alone, but I recommend reading the previous artic…

When you are entering numbers in a speadsheet, and don't remember what 6×7 is, you just type “=6*7" instead. It works in every cell! This is not so in Access. To enter the elusive 42 in a text box, you have to find a calculator, and then copy the re…

In Microsoft Access, learn the trick to repeating sub-report headings at the top of each page.
The problem with sub-reports and headings:
Add a dummy group to the sub report using the expression =1:
Set the “Repeat Section” property of the dummy…

With Microsoft Access, learn how to specify relationships between tables and set various options on the relationship.
Add the tables:
Create the relationship:
Decide if you’re going to set referential integrity:
Decide if you want cascade upda…